10z-7=12z+9

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Solution for 10z-7=12z+9 equation:


Simplifying
10z + -7 = 12z + 9

Reorder the terms:
-7 + 10z = 12z + 9

Reorder the terms:
-7 + 10z = 9 + 12z

Solving
-7 + 10z = 9 + 12z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-12z' to each side of the equation.
-7 + 10z + -12z = 9 + 12z + -12z

Combine like terms: 10z + -12z = -2z
-7 + -2z = 9 + 12z + -12z

Combine like terms: 12z + -12z = 0
-7 + -2z = 9 + 0
-7 + -2z = 9

Add '7' to each side of the equation.
-7 + 7 + -2z = 9 + 7

Combine like terms: -7 + 7 = 0
0 + -2z = 9 + 7
-2z = 9 + 7

Combine like terms: 9 + 7 = 16
-2z = 16

Divide each side by '-2'.
z = -8

Simplifying
z = -8

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